Cook County Sheriff Officers discovered the hidden storage area in the back of a bookshelf behind a false wall.

Inspectors from the Cook County Department of Revenue and sheriff were checking tax stamps on the cigarettes in Tom’s Food Mart when they saw a man pass through the false wall into a closed off unlocked area.

The sheriff’s office said the storage area contained 4,977 untaxed cigarettes. They were confiscated and the store was fined $128,425.